Move tracked prefs into services/preferences/tracked.

components/user_prefs/tracked/tracked_preference_histogram_names.cc

Index: components/user_prefs/tracked/tracked_preference_histogram_names.cc
diff --git a/components/user_prefs/tracked/tracked_preference_histogram_names.cc b/components/user_prefs/tracked/tracked_preference_histogram_names.cc
deleted file mode 100644
index 431bb9a31cf2a99b7931dbb68f3f929ab0f4929d..0000000000000000000000000000000000000000
--- a/components/user_prefs/tracked/tracked_preference_histogram_names.cc
+++ /dev/null
@@ -1,31 +0,0 @@
-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "components/user_prefs/tracked/tracked_preference_histogram_names.h"
-
-namespace user_prefs {
-namespace tracked {
-
-// Tracked pref histogram names.
-const char kTrackedPrefHistogramUnchanged[] =
-    "Settings.TrackedPreferenceUnchanged";
-const char kTrackedPrefHistogramCleared[] = "Settings.TrackedPreferenceCleared";
-const char kTrackedPrefHistogramMigratedLegacyDeviceId[] =
-    "Settings.TrackedPreferenceMigratedLegacyDeviceId";
-const char kTrackedPrefHistogramChanged[] = "Settings.TrackedPreferenceChanged";
-const char kTrackedPrefHistogramInitialized[] =
-    "Settings.TrackedPreferenceInitialized";
-const char kTrackedPrefHistogramTrustedInitialized[] =
-    "Settings.TrackedPreferenceTrustedInitialized";
-const char kTrackedPrefHistogramNullInitialized[] =
-    "Settings.TrackedPreferenceNullInitialized";
-const char kTrackedPrefHistogramWantedReset[] =
-    "Settings.TrackedPreferenceWantedReset";
-const char kTrackedPrefHistogramReset[] = "Settings.TrackedPreferenceReset";
-const char kTrackedSplitPrefHistogramChanged[] =
-    "Settings.TrackedSplitPreferenceChanged.";
-const char kTrackedPrefRegistryValidationSuffix[] = "FromRegistry";
-
-}  // namespace tracked
-}  // namespace user_prefs